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Obstacle detection in railway environments is crucial for ensuring safety. However, very few studies address the problem using a complete, modular, and flexible system that can both detect objects in the scene and estimate their distance…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Enrico Francesco Giannico , Federico Nesti , Gianluca D'Amico , Mauro Marinoni , Edoardo Carosio , Filippo Salotti , Salvatore Sabina , Giorgio Buttazzo

Drones can inspect overhead power lines while they remain energized, significantly simplifying the inspection process. However, localizing a drone relative to all conductors using an onboard LiDAR sensor presents several challenges: (1)…

Robotics · Computer Science 2025-06-27 Alexandre Girard , Steven A. Parkison , Philippe Hamelin

Obstacle Detection is a central problem for any robotic system, and critical for autonomous systems that travel at high speeds in unpredictable environment. This is often achieved through scene depth estimation, by various means. When fast…

Robotics · Computer Science 2016-07-22 Michele Mancini , Gabriele Costante , Paolo Valigi , Thomas A. Ciarfuglia

Drones operating in complex environments face a significant threat from thin obstacles, such as steel wires and kite strings at the submillimeter level, which are notoriously difficult for conventional sensors like RGB cameras, LiDAR, and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Zhengli Zhang , Xinyu Luo , Yucheng Sun , Wenhua Ding , Dongyue Huang , Xinlei Chen

Estimating a scene's depth to achieve collision avoidance against moving pedestrians is a crucial and fundamental problem in the robotic field. This paper proposes a novel, low complexity network architecture for fast and accurate human…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Shan An , Fangru Zhou , Mei Yang , Haogang Zhu , Changhong Fu , Konstantinos A. Tsintotas

In this paper, we propose a new technique that applies automated image analysis in the area of structural corrosion monitoring and demonstrate improved efficacy compared to existing approaches. Structural corrosion monitoring is the initial…

Computer Vision and Pattern Recognition · Computer Science 2022-01-12 Abdur Rahim Mohammad Forkan , Yong-Bin Kang , Prem Prakash Jayaraman , Kewen Liao , Rohit Kaul , Graham Morgan , Rajiv Ranjan , Samir Sinha

Depth perception is crucial for spatial understanding and has traditionally been achieved through stereoscopic imaging. However, the precision of depth estimation using stereoscopic methods depends on the accurate calibration of binocular…

Robotics · Computer Science 2025-11-25 Muhamamd Ishfaq Hussain , Zubia Naz , Muhammad Aasim Rafique , Moongu Jeon

Ego-motion estimation is vital for drones when flying in GPS-denied environments. Vision-based methods struggle when flight speed increases and close-by objects lead to difficult visual conditions with considerable motion blur and large…

Robotics · Computer Science 2025-05-01 Stavrow A. Bahnam , Christophe De Wagter , Guido C. H. E. de Croon

Monocular image-based 3D perception has become an active research area in recent years owing to its applications in autonomous driving. Approaches to monocular 3D perception including detection and tracking, however, often yield inferior…

Computer Vision and Pattern Recognition · Computer Science 2022-06-09 Longlong Jing , Ruichi Yu , Henrik Kretzschmar , Kang Li , Charles R. Qi , Hang Zhao , Alper Ayvaci , Xu Chen , Dillon Cower , Yingwei Li , Yurong You , Han Deng , Congcong Li , Dragomir Anguelov

Metric depth estimation plays an important role in mobile augmented reality (AR). With accurate metric depth, we can achieve more realistic user interactions such as object placement and occlusion detection. While specialized hardware like…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Ashkan Ganj , Yiqin Zhao , Hang Su , Tian Guo

This paper presents a vision-only autonomous flight system for small UAVs operating in controlled indoor environments. The system combines semantic segmentation with monocular depth estimation to enable obstacle avoidance, scene…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Sebastian Mocanu , Emil Slusanschi , Marius Leordeanu

3D object detection based on monocular camera data is a key enabler for autonomous driving. The task however, is ill-posed due to lack of depth information in 2D images. Recent deep learning methods show promising results to recover depth…

Computer Vision and Pattern Recognition · Computer Science 2020-05-18 Felix Nobis , Fabian Brunhuber , Simon Janssen , Johannes Betz , Markus Lienkamp

The diffusion of drones presents significant security and safety challenges. Traditional surveillance systems, particularly conventional frame-based cameras, struggle to reliably detect these targets due to their small size, high agility,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Gabriele Magrini , Lorenzo Berlincioni , Luca Cultrera , Federico Becattini , Pietro Pala

Automatic detection of flying drones is a key issue where its presence, especially if unauthorized, can create risky situations or compromise security. Here, we design and evaluate a multi-sensor drone detection system. In conjunction with…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Fredrik Svanström , Fernando Alonso-Fernandez , Cristofer Englund

Monocular depth estimation is often described as an ill-posed and inherently ambiguous problem. Estimating depth from 2D images is a crucial step in scene reconstruction, 3Dobject recognition, segmentation, and detection. The problem can be…

Computer Vision and Pattern Recognition · Computer Science 2019-01-29 Amlaan Bhoi

Monocular 3D lane detection is essential for autonomous driving, but challenging due to the inherent lack of explicit spatial information. Multi-modal approaches rely on expensive depth sensors, while methods incorporating fully-supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Max van den Hoven , Kishaan Jeeveswaran , Pieter Piscaer , Thijs Wensveen , Elahe Arani , Bahram Zonooz

Monocular depth estimation can play an important role in addressing the issue of deriving scene geometry from 2D images. It has been used in a variety of industries, including robots, self-driving cars, scene comprehension, 3D…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Ruilin Ma , Shiyao Chen , Qin Zhang

Dense depth recovery is crucial in autonomous driving, serving as a foundational element for obstacle avoidance, 3D object detection, and local path planning. Adverse weather conditions, including haze, dust, rain, snow, and darkness,…

Computer Vision and Pattern Recognition · Computer Science 2024-02-06 Han Li , Yukai Ma , Yuehao Huang , Yaqing Gu , Weihua Xu , Yong Liu , Xingxing Zuo

Depth estimation is one of the key technologies for realizing 3D perception in unmanned systems. Monocular depth estimation has been widely researched because of its low-cost advantage, but the existing methods face the challenges of poor…

Computer Vision and Pattern Recognition · Computer Science 2025-11-07 Chang Liu , Juan Li , Sheng Zhang , Chang Liu , Jie Li , Xu Zhang

There have been attempts to detect 3D objects by fusion of stereo camera images and LiDAR sensor data or using LiDAR for pre-training and only monocular images for testing, but there have been less attempts to use only monocular image…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Curie Kim , Ue-Hwan Kim , Jong-Hwan Kim